Flag that identifies that the email was created from the "Jira Cloud for Outlook" add-in

At present, if an issue is created from the "Jira Cloud for Outlook" add-in and "Include email" is selected, there is no way to know from the Email if it was actually created from the add-in.

It would be nice if there was an identifier such that when an Email is converted to Jira through the Outlook plug-in, there was some some sort of a stamp in the Email when we reply to the requestor, that indicates that the original email was already converted to a Jira issue.